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Growth And Carcass Traits Of Heifers As Affected By Hormonal Treatment, J. D. Crouse, B. D. Schanbacher, H. R. Cross, S. C. Seideman, S. B. Smith
Growth And Carcass Traits Of Heifers As Affected By Hormonal Treatment, J. D. Crouse, B. D. Schanbacher, H. R. Cross, S. C. Seideman, S. B. Smith
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Seventy-seven tleifers weighing about 200 kg were assigned randomly to 1) intact control (C), 2) ovariectomized (OVX), 3) immunized against estradiol (BSA-E), 4) BSA-E + trenbolone acetate (BSA-E+TBA), 5) TBA or 6) ovx + TBA groups. The objective of the study was to determine the effects of ovariectomy, immunoneutralization of estradiol and trenbolone acetate treatment on growth rate and carcass merit. Heifers were fed a corn-corn silage diet and were slaughtered when treatment groups attained live-animal weights of 433 kg. Observations of rate of growth, efficiency of feed conversion, characteristics of carcasses and characteristics of organoleptic properties of the cooked …